400073735775 has 24 divisors (see below), whose sum is σ = 755948850304. Its totient is φ = 182890850400.

The previous prime is 400073735741. The next prime is 400073735777. The reversal of 400073735775 is 577537370004.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-400073735775 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400073735777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 381022081 + ... + 381023130.

Almost surely, 2^400073735775 is an apocalyptic number.

400073735775 is a deficient number, since it is larger than the sum of its proper divisors (355875114529).

400073735775 is a wasteful number, since it uses less digits than its factorization.

400073735775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762045231 (or 762045226 counting only the distinct ones).

The product of its (nonzero) digits is 2160900, while the sum is 48.

The spelling of 400073735775 in words is "four hundred billion, seventy-three million, seven hundred thirty-five thousand, seven hundred seventy-five".